package geym.conc.ch3.collections;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;


public class SynHashMap {
    //    public static Map m=Collections.synchronizedMap(new HashMap());
    public static Map m = new ConcurrentHashMap();

    public static void main(String[] args) {
        m.put("hello", "world");
    }
}
